Lock for ignition circuits



IVI. .F. GIFFORD.

LOCK FOR IGNITION CIRCUITS. APPucATIoN FILEDAUG. I2. 1920.

Patented Aug. l, 1922.

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Specification of Letters Patent.

Patented Ang. 1, i222?,

Application filed August 12, 1920 Serial No. @3,934.

To @ZZ iii/tom t 'may concern.'

Be it known that l, MARVIN Girnonn, a citizen of the United States, and a resident oi" the city of Newaygo, iin the county of Nel waygo and State oit Michigan, have invented a new and useful Improvement in Locks for ignition Circuits, of'which the liollowing iS full, clear, and exact description. i

My invention relates" to limprovements in locks for ignition circuits, and it consists in the combinations, constructions and an rangements herein described and claimed.`

An object of my invention is to provide a locking device for ignition or like circuits provided with means for breaking the circuit at the will of the operator and with means for preventing the recstablishment of the cir# cuit thus broken until the last 4n amed means areoperated'in the manner known only to the operator. y A

A further object of my invention is to provide a device ol the type described that is de-. signed primarily for use .in an automobile or other automotive vehicle wherein `the device may operated in the manner set Aforth above, thereby reducing the possibility of the-ft oft the car since the saine cannot be driven under its own power by anyone not possessing the requisite knowledge as to the steps to be taken in operatingthe device.

il 'further object of rnyinvention is to provide a device ol? the type described that is relatively simple in construction and operal tion, not likely to get out of ordereasily, andv thoroughly practical commerciallyn A :truther object oimy invention is to pro-v vide a device or' the type described that can be applied. to an antcm'iobile or the like "w'itlr' out the necessity oit melting any extensive changes, if any', in construction of the latter. Other objects and advantages will appear in the :followingspecification, and the novel features ot' the invention will be particularly pointed out in the appended claims` i hilly invention is illustrated in the accompanying drawings, forming part oli this. application, in which f i Figure 1 is a planview oi' the device with the cover therefor removed,

Figure 2 `is a longitudinal section through the device,

Figure 3 is a reduced plan view ofthe showing the cover in place.

In carrying out my invention, l provide a casino 1 formed with a maro'inaloutwardly` b p C J extending flange V2 around its l upper edge adapted to su pport the cover 3 which maybe secured thereto in any suitable manneras by means o tf bolts 4l nhandle dis provided with a spindle portion 7 projecting through the cover and mounted therein for 'lree rota` vtable movement. A dialhl isrigidly secured to the handle "5, being carried `thereby"eX- tericr the cover I Disks 8 and 9 are loosely mounted kupon the spindle?, the disk being spaced from the inside wall of the cover 3 by a yspacing member 10 while the disk 9 is spaced from the dish 8 by a spacing member 11. A third disk 12 is `keyed to the spindle near its endiand is held on the spindle a nut 13. A spring 1li mounted upon the spiny die 7 is interposed between the disks 12and v9 to maintain 'the same in spaced relation.

'llhedisks 8, 9 and 1 2 areeach formed with a plurality of spaced apartopenings 15,15%, and 15b, respectively around their outer edges. These openings coincidewith gna-du#l ation 19 of a scale that isv delineated upon the dial 6. A pin `16 is inserted through `any one of the openings 15 in the disk S. pin 17 projected through one of the openings 15' inthe disli 9. A pin 18`is placed in one oit the openings 15b inthedisl `12.f @peration' ol the handle'in accordance with the comliination decided upon will cause the disks 8, 9` and 125th be `rotated until'notches 20, 2U, and 2Obyrespectively in edges ofthe three dis rs are in registration. rLlhis will be,v accomplished since'the p in V17 will contact with thefpin 146 whenth'e dislif i) is `rotated while the position of both disks 9 and 8 will be determined by operation ot' the; dislr12 since the pin 18 will contact with the pin 17.`

ldlhen the notches 20, 20 'and `20" in the edges oi,i the three'disks are in registi-ationl` the ui'iright portion 21,01: the detent 22 is re-l ceivedI therein.. The detent 22 extends through the guidefway 211;' and` connects with or may be 4formed integrallywith a slidable carrying plate 21' Shoulders 26 being formed at juncture of the detcnt 22 and the carrying plate 23 to limit the movement oi:y the latter toward 'the disks. The guide wayI 24tis secured to the bottomy of they casing 1 in suitable manner asby means of screws or' rivets 25. A f

The carrying plate 23 isformed 4with oppositelaterally extending arms 27- --2?which` are curved at their ends toward the disks and formed with upright end portions 28-28 to bumpers to .limit the movement oi: the-bolts` yond the arms 27-27. Secured to the bar j( 29 at 3l-3l j is a conducting connector bar 32.

`When thedetent V22 is received Withinthe registering notches in the disks as pictured in' lligurey l otzthe drawings, the contact 'bar 32 is in contact With conductingl contact bolts g3g-33 that are projected through openings in the upright end members S55-35 otsupporting plates 34h-34- 4and are insintained'` in vposition relative' to the connector bar 32 by springs 3o-3G interposed be`v tween studs 37-37 and theA rearward end membersh43?.y j Collars or Washers 384-38 that areormed of a resilient material are secured on theconducting bolts and form against the impact of the contact bar v2.

Secured to one `otthe conducting contact bolts 33 is an insulatedfeletrical conducting Wire 39 that is passed around the interior `Walls of the casing land is secured at its otherlend to "a-binding post-i2 that vprojects through the Wall of the casing` l. `This connection may be establishedv in any :suitable manner as by means of anut 51:1 ,screwing on the end of the binding post 42. `an insulating'vvasher 4:3 is interposed between the end of the conducting` vvii'eand lthe Wall ofthe casing' 2. A` siniilarinsulatedconducting Wire 40is connected with `the other one ot' the conduct-ine contact bolts`33 and is eX- tended around theinside Wall of thccasinp;

2. The other endet the conducting' Wire 41C) isisccuredto a binding' post 4l' that pro-I jects through the Wall of the casing l. An

insulating Washer 43 is placed upon vthe j bind-ing post to insulate the Wall oi the casinggrly from the conductingl Wire 40 `which is maintained on'the binding-post by ineens of a nut 4&4.` l j Exterior of the casing l, the binding; oost-s il and 42 are connected With adjacent` ends conducting` Wii'csi that 'forms a part 'ot the conducting means provided in anl ignition or like circuit in which thedevicc is placed, insulating` Washers 4G are rplaced on thelbindino'Y costs to insulate the conductinpV 1D i c Wires 45 from the ivall ot thecasing` L The `conducting` Wires t5 may bc connected with;

the binding posts in any suitable manner as bv being vmaintained thereon. by means'oi nuts et?. j l

The'carrying plate 23 is extended `through the guidevvay 48 that is securedv tothe bottom Wall of the casing lby screws or rivets :.ceived ina `guide slot 51` provided in Vthe z then been operated in accordance .combination decided upon. v i 49.and is further guided in its'-moversent1l that is, With the detent 22 disposed within the registeringnotches in the disks.4

. A handle 55 positioned exterior the cover `3 has a shanlr orstein '56 extending through the cover with its eXtreme end received TWithin a slot 57 that is'provided in the carrying plate 23. A disk 58 that is eccentrically mounted Von the stern 56 and therefore serves Plat@ as a cainmember7 may be operated by tui-h5 v ing the handle 55 a halt revolution to nieve the carrying' plate 23 into the posithmy shown `by the dotted lines in Figure l, there` by Inovingthe connector plate 32 outro? con'- ta-ct vvith the conducting contact bolts and breaking the ignition-circuit of which the ivires 39 and 40 constitute a part. When the carrying plate 23 occupies the `position shown' by the dottedlines in Figure i, the detent22 has been Withdrawn from the ren(- istering notches inthe disks. The handle 5 may then ybe turned to rotate the lists 8, 9 and-12, thereby moving the notches the disks out of registration. c Consequentlyl the handle must be again moved in accordance with the combinationdecided upon to cause the i regi stration'ot the notches, 20," 20?, and 20b before thecircuit canbe closed "nce the detent must enter the rc'ig'isterii,e

notches 2OV before the connector plate cancontact with the contact boltsBB. i i j l i The cani-member 58 is enlarged at 59, the enlarged portionthereof being formed ends of the conducting with a .recess 60. "When the "caminenibeit 58 has been moved into the position indicated by the dotted lines in Figure 1 it To accoinmay be locked in this position. plisli this object7 I provide a loch-62 that is of 'the' Vcabinet `lock type and be oi" `any suitable construction; The lock 62 is mounted upon a block 63 secured to the bottoni oi the easingfl and hasa cylinder 64 thereofA projecting;` through an oj'ieninn` in the cover A key(1i`ot shown) may he yinserted in the cylinder 64 to operate the lool; bolt G5, thereby causing` the projection o't the latter through anopeninn (Shin the end portion 53, ot the carrying plate 23 into thel recess 60 in cani member 5S. (lense`` `quently7 the circuit cannot beclosed until the cam lmember 58 has been released by operation oif the lool; 62 andthe handle 5 has vvith the lio 'iis

`From the foregoing description fot the c' various parts ol:l the device lthe operation thereof'niay be readily understood and reh quil-es `no detailed description. in service iso vthe device would be suitably positioned in an automobile in such a manner as to permit the-Wires 39 andlO being incorporated in the regular ignition circuit.y The casing ot the lock will be secured to the dash board or other suitable portion or the ycar `where the handles v5 and can be conveniently operated. The casing l Vmrrv be lined with a suitable insulating' material (not shown) as an additional sate guard against short circuiting.

claim:

l. A. looking device tor an electrical circuit comprising a casing, a pair' ot conductinn` contact members disposed therein, a slidable carrvinoj plate disposed in said casing7 said Cai tent at one `end thereofa means for guiding said carrying; plate in its slidable movement, a conductnigv connector cai ied by said carrying plate` a stem mount yd in said for rotzfitable movement, a plurality of disks mounted on said stein each of said dislrs beineprovided with notch in its peripheral i l 'ension means tor normally holding said connector in contact with said members and said. detcnt in the registering notches in said dislt, means Yfor occasioninp,y movement of said carrying plate to move said connector ont ot contact .vith said contact members and to withdraw said detent trom said registering notches; and means for operating said dislirs to loch said carrying plate in said last named position, Wherefore 13e-closing` of the circuit is prevented.

2. A locking device :for an electrical circuit comprising a casing, a pair of conducting-3 contact members disposed therein, a slidable carryingi plate disposed in said ci sinn', said carrying plate being' formed with a de- 'tent at one end thereof, means for guiding said caiiyiiig` plate in its slidable movement, a conducting connector carried by'said carryiiie` plate1 a stem mounted in said casing for rotatable inoveinent,y a plurality ot disks mounted on said stein, each. of said disks being provided with a notch in its peripheral ed tension means for normally holding Jl connector in contact with said contact nien'rbers and said d etent in the registering notches in said disk, means YFor occasioning movement ol said carryingpla-te to move said connector ont ol contar'it 'with said contact inembe 1' and tonitlidrew said detent 'from said reeistf ine' notches, means tor operatingv said discs to locl: said carrying plate in said last named position, Wherefore icrlosing ot tliecircuit is preventede and an auxiliary loclriii in cans for maintaining` said carrying;` pinto in its last mentioned position.

8. device of the character described comprising a casing, two separate substantially stationary contact members disposed within the casingn a slidable carrying plate disposed Within the casingand formed in- Ae; plate being; formed with a dei finos y c terinediately with oppositely eiiteiiclinp,` lateral arms, a conducting connectorsecured "to saidarms and adapted to engage said contacto when 'the carrying plate has been moved inone direction into one position and 'to disengage the contacts when the carrying plateis moved inthe opposite direction, a combination locking mechanism partially disposed Within the casing and operable eX- teriorly ofthe casing to permit or to prevent movement of the carrying plate in the lirst named direction, and tensional means connected with the carrying plate and arranged to urge the latter in the iii-st named direction. y

at. A device oit the character described comprisingv a casing, tivo separate substan tially stationary contact members disposed Within the casing', a slidable carrying plate disposed Within the casing and formed in termediately with oppositely extending -lateral armsy a conducting connector secured to said arms and adapted to engage said contacts when the carrying plate has been moved in one direction into one position and to disengage the contacts When the carrying plate is moved in the opposite direction, a`

combination locking mechanism partially disposed Within the casing and operable ei:- teriorly of the casing to permit orto prevent movement of the carryiing` plate in the first named direction, tensional means connected with the carrying` plate and arranged to urge the latter in "the first named direc tioin and means operable exteriorly `olf the casing for moving the carrying plate in the second named direction against the action ot the tensional means.

)i comprising; a casing, tivo separate substantially stationary contact membersdisposed within the casing, a slidable carrying plate disposed within the casing and formed intermediately with oppositely extending lateral armsr` a conducting connector secured to device oli the character describedy said arms and adapted to engage said contacts when the 'carrying plate has been moved in one direction into one position and to disengagre the contacts when the carryingy plato is moved in the opposite direction, a combination locking;v mechanism partially tensional means, and other means Ator lock-v` ing said carryingplate against movement in the first named direction. 6. A. device of the character described comprising a casingg two separate Contact meliibei's, meeneoi' yieldingly maintaining said .Contact ymemberS in vdeterminedv `:relative endedapted to engage said colfitics whenA the carrying plate has been movedv in onev direction into one position `end'to disengage the contacts when the carrying plate is moved in the opposite direction, and mean's cm'ried by the casing for controlling the movements of the slidable carrying plate.

MARVIN F. GIFF ORD. 

